This 3-lesson unit provides students with activities that help them relate solid objects to their 2-D sketches and nets. They will observe and describe attributes and parts of 3-D objects, use hands on materials and interactive websites. They will create and assemble 2-D nets and use Venn diagrams to compare properties. Teacher support materials and student worksheets are provided.

4. Represent three-dimensional figures using nets made up of rectangles and triangles, and use the nets to find the surface area of these figures. Apply these techniques in the context of solving real-world and mathematical problems.[6]